Moon phases. Composite time-lapse image of the phases of the Moon,as seen from Earth during a lunar (synodic) month,around the Earth & super- imposed on a starfield. The phases are (anti- clockwise from bottom): new moon; waxing crescent; first quarter; waning gibbous; full moon; waxing gibbous; last quarter; and waning crescent. The lunar phases occur because the Moon does not produce light,but reflects sunlight. As it trav- els on its 29.53-day orbit,parts of the Moon's surface which are visible from Earth become shad- owed by the Moon itself. New Moons occur when the Moon lies between the Earth and Sun,& full moons occur when the Moon is furthest from the Sun | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Sanford, John |
Bildgröße: | 3120 px × 2400 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |